Microphone



FIG. 1 is a front elevational view of a microphone showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view of one side thereof; and,

FIG. 4 is a side elevational view of the opposite side thereof.

The broken line showings of the central circle on the front, the trapezoid shaped area on the left side and the frusto-conical element on the bottom are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a microphone, as shown and described. 